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Super Precision Angular Contact Ball Bearings 71908 CD/P4ADGA

Super Precision Angular Contact Ball Bearings 71908 CD/P4ADGA

The 71908 CD/P4ADGA is a super precision angular contact ball bearing with a 40mm bore and 62mm outer diameter, crafted from durable chrome steel. It features a 15° contact angle and is designed for angular contact loads, handling up to 4478 lbf dynamically.

Its open design and phenolic cage ensure smooth operation at high speeds, reaching up to 56,000 RPM. The extra light preload (Class A) enhances precision, making it ideal for demanding applications.

This bearing comes in a matched set of two, allowing universal matching for back-to-back, face-to-face, or tandem arrangements. It performs reliably in temperatures from -30°C to 110°C.

Weighing just 0.22kg, it’s a lightweight yet robust choice for precision machinery like spindles or high-speed tools. Interchangeable with SKF bearings, it offers a practical replacement option.

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Product Parameters

  • Part Number 71908 CD/P4ADGA
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 40 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 62 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 24 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 6.35 mm
  • Ball Qty 21
  • Contact Angle 15°
  • Tolerance Class P4A
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement Universal matching
  • Number Of Bearings In Matched Set 2
  • Universal Matching Bearing Yes, back-to-back (<>), face-to-face (><) or tandem (>>)
  • Preload Extra light / Class A
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 4478 lbf
  • Static Radial Load 3825 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 56000 rpm
  • Weight 0.22 kg
  • Price（$） 163.674
Super Precision Angular Contact Ball Bearings 71908 CD/P4ADGA dimension drawing
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Features

Performance Features of 71908 CD/P4ADGA Bearing

71908 CD/P4ADGA Bearing is designed with a 15° contact angle, optimising load distribution for angular contact applications.
Its chrome steel rings and balls enhance durability, supporting dynamic radial loads up to 4478 lbf.

The phenolic cage ensures smooth operation, even at high speeds of 56,000 rpm.
Universal matching allows flexible arrangements like back-to-back or face-to-face configurations.

With a precision tolerance class of P4A, 71908 CD/P4ADGA Bearing delivers reliable performance.
Its extra light preload reduces friction, making it ideal for precision tasks.

The open design simplifies lubrication, maintaining efficiency in temperatures from -30°C to 110°C.
Weighing just 0.22 kg, it balances strength and lightweight construction.

Application

Key Fields for 71908 CD/P4ADGA Bearing
In precision machine tools, 71908 CD/P4ADGA Bearing excels with its 15° contact angle, ensuring accurate spindle rotation for high-tolerance machining. The universal matching design allows flexible arrangements like back-to-back or tandem setups.

Where Is 71908 CD/P4ADGA Bearing Used?
You’ll often spot 71908 CD/P4ADGA Bearing in automotive transmissions, where its extra-light preload reduces friction during high-speed shifts. The phenolic cage dampens vibrations for smoother gear engagement.

Built for Heavy-Duty Use: 71908 CD/P4ADGA Bearing
This bearing handles radial loads up to 4478 lbf in industrial pumps, with chrome steel rings resisting wear in continuous operation. Its P4A tolerance class guarantees consistent performance under stress.

Medical vs Industrial: Where 71908 CD/P4ADGA Bearing Excels
While 71908 CD/P4ADGA Bearing supports delicate surgical drill spindles, it equally thrives in packaging machinery. The 56,000 rpm limit suits both sterile environments and production lines.

Practical Applications of 71908 CD/P4ADGA Bearing
Robotic arms rely on 71908 CD/P4ADGA Bearing for precise joint movements, thanks to its low torque and thermal stability. The matched pair setup simplifies maintenance in automated cells.

Q&A

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